Artigo

Influence of the tidal and rainfall cycles on the population structure and density of Mesacanthion hirsutum gerlach (nematoda, thoracostomopsidae) on a tropical sandy beach (Tamandaré Bay, Pernambuco, Brazil)

The population structure (males, females and juveniles) and density of Mesacanthion hirsutum Gerlach were studied during the tides (low, flood, high and ebb) of two consecutive tidal cycles in four different months of the year (May, July, September and November). Mesacanthion hirsutum density variat...

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Autor principal: VENEKEY, Virág
Outros Autores: GENEVOIS, Verônica Gomes da Fonseca, SANTOS, Paulo Jorge Parreira dos
Grau: Artigo
Idioma: eng
Publicado em: 2015
Assuntos:
Nematode marinhos
Meiobentos
Ambiente entremarés
Variações sazonais
Brasil - País
Acesso em linha: http://repositorio.ufpa.br/jspui/handle/2011/6676
id ir-2011-6676
recordtype dspace
spelling ir-2011-66762018-02-22T16:53:40Z Influence of the tidal and rainfall cycles on the population structure and density of Mesacanthion hirsutum gerlach (nematoda, thoracostomopsidae) on a tropical sandy beach (Tamandaré Bay, Pernambuco, Brazil) VENEKEY, Virág GENEVOIS, Verônica Gomes da Fonseca SANTOS, Paulo Jorge Parreira dos Nematode marinhos Meiobentos Ambiente entremarés Variações sazonais Brasil - País The population structure (males, females and juveniles) and density of Mesacanthion hirsutum Gerlach were studied during the tides (low, flood, high and ebb) of two consecutive tidal cycles in four different months of the year (May, July, September and November). Mesacanthion hirsutum density variations showed association with the rainfall cycle, with lower densities during July and September and significantly higher values in May and November. The population structure was constituted mostly by juveniles indicating a continuous reproduction during all the studied period. There were no significant differences between light and dark periods of the day, however, the higher densities detected during the high and ebb tidal stages demonstrate that this species could be dispersing through the water column and/or migrating within the sediment. A estrutura populacional (machos, fêmeas e juvenis) e densidade de Mesacanthion hirsutum Gerlach foram estudadas durante as marés (baixa, enchente, alta e vazante) de dois ciclos de maré consecutivos, em quatro meses diferentes do ano (Maio, Julho, Setembro e Novembro). As variações de densidade de Mesacanthion hirsutum mostraram associação com o ciclo de chuvas, com densidades mais baixas durante Julho e Setembro e significativamente maiores em Maio e Novembro. A estrutura populacional constituiu-se em sua maior parte por juvenis indicando uma reprodução continua durante todo o período de estudo. Não foram encontradas diferenças significativas entre os períodos claros e escuros do dia, contudo maiores densidades foram detectadas durante as marés altas e vazantes demonstrando que a espécie pode estar se dispersando através da coluna d'água e/ou migrando dentro do sedimento. 2015-05-18T12:19:33Z 2015-05-18T12:19:33Z 2011-09 Artigo de Periódico VENEKEY, Virag; FONSECA-GENEVOIS, Verônica Gomes da; SANTOS, Paulo Jorge Parreira dos. Influence of the tidal and rainfall cycles on the population structure and density of Mesacanthion hirsutum gerlach (nematoda, thoracostomopsidae) on a tropical sandy beach (Tamandaré Bay, Pernambuco, Brazil). Brazilian Journal of Oceanography, São Paulo, v. 59, n. 3, p. 253-258, jul./set. 2011. Disponível em: <http://www.scielo.br/pdf/bjoce/v59n3/v59n3a05.pdf>. Acesso em: 24 abr. 2015. <http://dx.doi.org/10.1590/S1679-87592011000300005>. 1982-436X http://repositorio.ufpa.br/jspui/handle/2011/6676 eng Acesso Aberto application/pdf
institution Repositório Institucional - Universidade Federal do Pará
collection RI-UFPA
language eng
topic Nematode marinhos
Meiobentos
Ambiente entremarés
Variações sazonais
Brasil - País
spellingShingle Nematode marinhos
Meiobentos
Ambiente entremarés
Variações sazonais
Brasil - País
VENEKEY, Virág
Influence of the tidal and rainfall cycles on the population structure and density of Mesacanthion hirsutum gerlach (nematoda, thoracostomopsidae) on a tropical sandy beach (Tamandaré Bay, Pernambuco, Brazil)
topic_facet Nematode marinhos
Meiobentos
Ambiente entremarés
Variações sazonais
Brasil - País
description The population structure (males, females and juveniles) and density of Mesacanthion hirsutum Gerlach were studied during the tides (low, flood, high and ebb) of two consecutive tidal cycles in four different months of the year (May, July, September and November). Mesacanthion hirsutum density variations showed association with the rainfall cycle, with lower densities during July and September and significantly higher values in May and November. The population structure was constituted mostly by juveniles indicating a continuous reproduction during all the studied period. There were no significant differences between light and dark periods of the day, however, the higher densities detected during the high and ebb tidal stages demonstrate that this species could be dispersing through the water column and/or migrating within the sediment.
format Artigo
author VENEKEY, Virág
author2 GENEVOIS, Verônica Gomes da Fonseca
SANTOS, Paulo Jorge Parreira dos
author2Str GENEVOIS, Verônica Gomes da Fonseca
SANTOS, Paulo Jorge Parreira dos
title Influence of the tidal and rainfall cycles on the population structure and density of Mesacanthion hirsutum gerlach (nematoda, thoracostomopsidae) on a tropical sandy beach (Tamandaré Bay, Pernambuco, Brazil)
title_short Influence of the tidal and rainfall cycles on the population structure and density of Mesacanthion hirsutum gerlach (nematoda, thoracostomopsidae) on a tropical sandy beach (Tamandaré Bay, Pernambuco, Brazil)
title_full Influence of the tidal and rainfall cycles on the population structure and density of Mesacanthion hirsutum gerlach (nematoda, thoracostomopsidae) on a tropical sandy beach (Tamandaré Bay, Pernambuco, Brazil)
title_fullStr Influence of the tidal and rainfall cycles on the population structure and density of Mesacanthion hirsutum gerlach (nematoda, thoracostomopsidae) on a tropical sandy beach (Tamandaré Bay, Pernambuco, Brazil)
title_full_unstemmed Influence of the tidal and rainfall cycles on the population structure and density of Mesacanthion hirsutum gerlach (nematoda, thoracostomopsidae) on a tropical sandy beach (Tamandaré Bay, Pernambuco, Brazil)
title_sort influence of the tidal and rainfall cycles on the population structure and density of mesacanthion hirsutum gerlach (nematoda, thoracostomopsidae) on a tropical sandy beach (tamandaré bay, pernambuco, brazil)
publishDate 2015
url http://repositorio.ufpa.br/jspui/handle/2011/6676
_version_ 1832604632083333120
score 11.755432

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